Patch 3.2.0 (04-Aug-2009): Being under the effects of [Cyclone] when the buff from this talent is about to expire will no longer make it last indefinitely.

Patch 3.1.3 (2009-06-02): Talent redesigned. Now increases energy regeneration by 30% while stealthed, and for 20 seconds after breaking stealth.Before: Abilities used while stealthed and for 6 seconds after breaking stealth cost 10 less energy.